Kal Raustiala and Chris Sprigman, continuing their excellent blogging (soon to be in book form) about markets succeeding in absence of intellectual property, have taken a look at the question of whether or not different brands of marijuana can be covered by trademark. With the increasing legality of medical marijuana, it's not uncommon for different strands to get their own brands. However, as the two note, plant varieties cannot be trademarked, but you can build a brand on top of one. So, as an example, Fuji apples cannot be trademarked, because that's a variety -- but Rainier Brand Fuji Apples is a trademark.
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